Hand Saw
February 13th, 2005
A machine can cut some piece of work in 6 minutes and a man using a hand saw could do it in 18 minutes.?
A machine can cut some piece of work in 6 minutes and a man using a hand saw could do it in 18 minutes. After 4 minutes there is a power shortage and the wood must be cut by hand saw. How many minutes must the man work to complete the task?
Machine can cut some piece of work in 6 minutes
So in 4 minutes , machine has done 4/6 of the job i.e. 2/3 rd
Remaining work = 1/3 rd
Man can complete the work in 18 minutes
So 1/3 rd of the work = 18/3 = 6 minutes ANSWER
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